First ecotoxicological assessment assay in a hydroelectric reservoir: the Lake Taabo (Côte d'Ivoire).
Organochlorine pesticides (OCPs) contamination was assessed in marketable species, two fishes (tilapia and catfish) and a prawn from the Lake Taabo (Côte d'Ivoire). Lindane and endosulfan were the main contaminants, suggesting their current use. DDT, endrin, heptachlor plus traces of chlordane, aldrin and fipronil were also detected. In fishes and in prawns, enzymatic biomarkers exhibited significant correlations with OCPs levels, showing the feasibility of a biomonitoring. The transfer of OCPs along the aquatic food web and their immunosuppressive effects in human are discussed. This preliminary study highlights that the pesticide contamination was concomitant with the increase in infectious diseases in the bordering population of this African lake.
Roche
Hélène
H
Ecologie Systématique et Evolution, Université Paris-Sud 11-CNRS-AgroPariTech, Orsay cedex, France. helene.roche@u-psud.fr
Tidou
Abiba
A
D000818:Animals; D002397:Catfishes; D007560:Cote d'Ivoire; D003445:Crustacea; D004784:Environmental Monitoring / Q000379:methods; D009943:Organophosphorus Compounds / Q000633:toxicity; D010575:Pesticides / Q000633:toxicity; D011210:Power Plants; D017210:Tilapia; D014874:Water Pollutants, Chemical / Q000633:toxicity*
D009943:Organophosphorus Compounds; D010575:Pesticides; D014874:Water Pollutants, Chemical